"To help put your life into perspective...Today was the last day before our winter break. We will have two weeks off to rest with our families and loved ones over the holidays then head back to school in 2019," Ms Uretsky-Pratt, 24, shared on Facebook.

Ms Uretsky-Pratt shares a photo of the gift on Facebook. (Facebook)

"With it being the day before break and Christmas right around the corner, most teachers bring their kiddos something such as books or little treats and occasionally in return receive something from their students," she writes.

"Today I received some chocolates, sweet handmade notes, some jewellery, but these Lucky Charm marshmallows stood out to me the most," she continues. "You see, 100% of my school is on free/reduced lunch. They also get free breakfast at school every day of the school week. This kiddo wanted to get my something so badly, but had nothing to give.

"So rather than give me nothing, this student opened up her free breakfast cereal this morning, took the packaging of her fork, straw, and napkin, and finally took the time to take every marshmallow out of her cereal to put in a bag -- for me," she continues.